大乘起信論裂網疏 6.102

6.102

此即滅諦觀也，緣生如幻，則即事而真。真非事外，故非心所行，不可譬喻言說。正治凡外非滅計滅，兼治二乘捨有覓空，權位菩薩棄邊取中。

This is the contemplation of the truth of cessation. Conditionally arisen phenomena are like illusions, which means that within phenomena themselves there is truth. Truth is not outside phenomena; hence it is not within the scope of mental activity, beyond analogy and verbal expression. This directly remedies ordinary beings and outsiders grasping at what is not cessation as cessation, and concurrently remedies the two vehicles abandoning existence to seek emptiness, as well as provisional bodhisattvas discarding extremes to grasp the middle.